JPS63162676U - - Google Patents
Info
- Publication number
- JPS63162676U JPS63162676U JP5657987U JP5657987U JPS63162676U JP S63162676 U JPS63162676 U JP S63162676U JP 5657987 U JP5657987 U JP 5657987U JP 5657987 U JP5657987 U JP 5657987U JP S63162676 U JPS63162676 U JP S63162676U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- control piston
- valve
- piston
- increase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Hydraulic Control Valves For Brake Systems (AREA)
Description
第１図は本考案の一実施例であるプロポーシヨ
ニングバルブの断面図であり、第２図はその液圧
制御特性を示す図である。第３図、第４図、第５
図および第６図は、第１図に示すプロポーシヨニ
ングバルブの作動を経時的に示す部分断面図であ
る。
２：プロポーシヨニングバルブ（Ｐバルブ）、
４：ハウジング、１２：バルブピストン、１４：
弁子、１６：弁座、２４，４６：大気圧室、２６
，４８，６０：圧縮コイルスプリング、３２：増
圧用制御ピストン、３６：制御液圧室、３８：減
圧用制御ピストン、４０：ピン、４２：長穴。
FIG. 1 is a sectional view of a proportioning valve which is an embodiment of the present invention, and FIG. 2 is a diagram showing its hydraulic pressure control characteristics. Figure 3, Figure 4, Figure 5
6 are partial cross-sectional views showing the operation of the proportioning valve shown in FIG. 1 over time. 2: Proportioning valve (P valve),
4: Housing, 12: Valve piston, 14:
Valve, 16: Valve seat, 24, 46: Atmospheric pressure chamber, 26
, 48, 60: compression coil spring, 32: pressure increase control piston, 36: control hydraulic chamber, 38: pressure reduction control piston, 40: pin, 42: elongated hole.
Claims (1)
減圧して出力側へ供給するバルブピストンがバル
ブスプリングによつて開弁方向へ付勢されたプロ
ポーシヨニングバルブにおいて、 入力側の液圧の上昇に伴いその液圧により原位
置から移動して前記バルブスプリングのスプリン
グ荷重を増大させる増圧用制御ピストンを設ける
とともに、そのピストンが移動限度にある状態で
入力側の液圧の更なる増大に伴いその液圧により
初期位置から移動して前記増圧用制御ピストンを
前記原位置へ復帰させる減圧用制御ピストンを設
けたことを特徴とする制動液圧制御用プロポーシ
ヨニングバルブ。 (2) 前記増圧用制御ピストンと減圧用制御ピス
トンとが一定限度内で相対移動可能に連結される
とともに、増圧用制御ピストンが少なくとも前記
バルブスプリングを含む付勢手段によつて原位置
へ付勢され、減圧用制御ピストンがその付勢手段
より付勢力の大きいピストンスプリングによつて
前記初期位置へ付勢され、かつ減圧用制御ピスト
ンの受圧面積が増圧用制御ピストンの受圧面積よ
り大きくされている実用新案登録請求の範囲第１
項記載のプロポーシヨニングバルブ。[Claims for Utility Model Registration] (1) A valve piston that works with an on-off valve to proportionally reduce hydraulic pressure on the input side and supply it to the output side is urged in the valve opening direction by a valve spring. In a proportioning valve, a pressure increasing control piston is provided which moves from its original position due to the increase in hydraulic pressure on the input side to increase the spring load of the valve spring, and the piston is at its movement limit. Braking hydraulic pressure control characterized in that a pressure reducing control piston is provided which moves the pressure increasing control piston from its initial position due to the further increase in the hydraulic pressure on the input side and returns the pressure increasing control piston to its original position. Proportioning valve. (2) The pressure increase control piston and the pressure decrease control piston are connected to be movable relative to each other within a certain limit, and the pressure increase control piston is urged to the original position by a biasing means including at least the valve spring. and the pressure reduction control piston is urged to the initial position by a piston spring having a larger urging force than the urging means, and the pressure receiving area of the pressure reduction control piston is larger than the pressure receiving area of the pressure increasing control piston. Scope of claim for utility model registration No. 1
Proportioning valve as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5657987U JPS63162676U (en) | 1987-04-14 | 1987-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5657987U JPS63162676U (en) | 1987-04-14 | 1987-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63162676U true JPS63162676U (en) | 1988-10-24 |
Family
ID=30885512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5657987U Pending JPS63162676U (en) | 1987-04-14 | 1987-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63162676U (en) |
-
1987
- 1987-04-14 JP JP5657987U patent/JPS63162676U/ja active Pending